MipsMCTargetDesc.cpp revision 5a364c5561ec04e33a6f5d52c14f1bac6f247ea0
1b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot//===-- MipsMCTargetDesc.cpp - Mips Target Descriptions -------------------===// 2b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// 3b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// The LLVM Compiler Infrastructure 4b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// 5b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// This file is distributed under the University of Illinois Open Source 6b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// License. See LICENSE.TXT for details. 7b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// 8b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot//===----------------------------------------------------------------------===// 9b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// 10b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// This file provides Mips specific target descriptions. 11b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// 12b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot//===----------------------------------------------------------------------===// 13b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 14b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsMCTargetDesc.h" 15b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "InstPrinter/MipsInstPrinter.h" 16b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsMCAsmInfo.h" 17b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsTargetStreamer.h" 18b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCCodeGenInfo.h" 19b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCELF.h" 20b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCELFStreamer.h" 21b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCInstrInfo.h" 22b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCRegisterInfo.h" 23b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCSubtargetInfo.h" 24b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MCSymbol.h" 25b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/MC/MachineLocation.h" 26b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/Support/CommandLine.h" 27b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/Support/ErrorHandling.h" 28b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/Support/FormattedStream.h" 29b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "llvm/Support/TargetRegistry.h" 30b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 31b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#define GET_INSTRINFO_MC_DESC 32b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsGenInstrInfo.inc" 33b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 34b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#define GET_SUBTARGETINFO_MC_DESC 35b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsGenSubtargetInfo.inc" 36b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 37b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#define GET_REGINFO_MC_DESC 38b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot#include "MipsGenRegisterInfo.inc" 39b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 40b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabotusing namespace llvm; 41b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 42b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabotstatic cl::opt<bool> PrintHackDirectives("print-hack-directives", 43b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot cl::init(false), cl::Hidden); 44b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 45b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot// pin vtable to this file 46b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabotvoid MipsTargetStreamer::anchor() {} 47b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 48b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabotstatic std::string ParseMipsTriple(StringRef TT, StringRef CPU) { 49b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot std::string MipsArchFeature; 50b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot size_t DashPosition = 0; 51b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot StringRef TheTriple; 52b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 53b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot // Let's see if there is a dash, like mips-unknown-linux. 54b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot DashPosition = TT.find('-'); 55b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 56b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot if (DashPosition == StringRef::npos) { 57b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot // No dash, we check the string size. 58b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot TheTriple = TT.substr(0); 59b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } else { 60b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot // We are only interested in substring before dash. 61b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot TheTriple = TT.substr(0,DashPosition); 62b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } 63b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 64b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot if (TheTriple == "mips" || TheTriple == "mipsel") { 65b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot if (CPU.empty() || CPU == "mips32") { 66b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot MipsArchFeature = "+mips32"; 67b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } else if (CPU == "mips32r2") { 68b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot MipsArchFeature = "+mips32r2"; 69b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } 70b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } else { 71b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot if (CPU.empty() || CPU == "mips64") { 72b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot MipsArchFeature = "+mips64"; 73b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } else if (CPU == "mips64r2") { 74b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot MipsArchFeature = "+mips64r2"; 75b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } 76b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot } 77b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot return MipsArchFeature; 78b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot} 79b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot 80b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabotstatic MCInstrInfo *createMipsMCInstrInfo() { 81b3823db9f1192d8c81345740b3e65bd6738ba55bBrett Chabot MCInstrInfo *X = new MCInstrInfo(); 82 InitMipsMCInstrInfo(X); 83 return X; 84} 85 86static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) { 87 MCRegisterInfo *X = new MCRegisterInfo(); 88 InitMipsMCRegisterInfo(X, Mips::RA); 89 return X; 90} 91 92static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU, 93 StringRef FS) { 94 std::string ArchFS = ParseMipsTriple(TT,CPU); 95 if (!FS.empty()) { 96 if (!ArchFS.empty()) 97 ArchFS = ArchFS + "," + FS.str(); 98 else 99 ArchFS = FS; 100 } 101 MCSubtargetInfo *X = new MCSubtargetInfo(); 102 InitMipsMCSubtargetInfo(X, TT, CPU, ArchFS); 103 return X; 104} 105 106static MCAsmInfo *createMipsMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) { 107 MCAsmInfo *MAI = new MipsMCAsmInfo(TT); 108 109 unsigned SP = MRI.getDwarfRegNum(Mips::SP, true); 110 MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, SP, 0); 111 MAI->addInitialFrameState(Inst); 112 113 return MAI; 114} 115 116static MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM, 117 CodeModel::Model CM, 118 CodeGenOpt::Level OL) { 119 MCCodeGenInfo *X = new MCCodeGenInfo(); 120 if (CM == CodeModel::JITDefault) 121 RM = Reloc::Static; 122 else if (RM == Reloc::Default) 123 RM = Reloc::PIC_; 124 X->InitMCCodeGenInfo(RM, CM, OL); 125 return X; 126} 127 128static MCInstPrinter *createMipsMCInstPrinter(const Target &T, 129 unsigned SyntaxVariant, 130 const MCAsmInfo &MAI, 131 const MCInstrInfo &MII, 132 const MCRegisterInfo &MRI, 133 const MCSubtargetInfo &STI) { 134 return new MipsInstPrinter(MAI, MII, MRI); 135} 136 137namespace { 138class MipsTargetAsmStreamer : public MipsTargetStreamer { 139 formatted_raw_ostream &OS; 140 141public: 142 MipsTargetAsmStreamer(formatted_raw_ostream &OS); 143 virtual void emitMipsHackELFFlags(unsigned Flags); 144 virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val); 145}; 146 147MipsTargetAsmStreamer::MipsTargetAsmStreamer(formatted_raw_ostream &OS) 148 : OS(OS) {} 149 150void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) { 151 if (!PrintHackDirectives) 152 return; 153 154 OS << "\t.mips_hack_elf_flags 0x"; 155 OS.write_hex(Flags); 156 OS << '\n'; 157} 158void MipsTargetAsmStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) { 159 if (!PrintHackDirectives) 160 return; 161 162 OS << "\t.mips_hack_stocg "; 163 OS << Sym->getName(); 164 OS << ", "; 165 OS << Val; 166 OS << '\n'; 167} 168 169class MipsTargetELFStreamer : public MipsTargetStreamer { 170public: 171 MCELFStreamer &getStreamer(); 172 MipsTargetELFStreamer(); 173 virtual void emitMipsHackELFFlags(unsigned Flags); 174 virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val); 175}; 176 177MipsTargetELFStreamer::MipsTargetELFStreamer() {} 178 179MCELFStreamer &MipsTargetELFStreamer::getStreamer() { 180 return static_cast<MCELFStreamer &>(*Streamer); 181} 182 183void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) { 184 MCAssembler &MCA = getStreamer().getAssembler(); 185 MCA.setELFHeaderEFlags(Flags); 186} 187 188// Set a symbol's STO flags 189void MipsTargetELFStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) { 190 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Sym); 191 // The "other" values are stored in the last 6 bits of the second byte 192 // The traditional defines for STO values assume the full byte and thus 193 // the shift to pack it. 194 MCELF::setOther(Data, Val >> 2); 195} 196} 197 198static MCStreamer *createMCStreamer(const Target &T, StringRef TT, 199 MCContext &Context, MCAsmBackend &MAB, 200 raw_ostream &OS, MCCodeEmitter *Emitter, 201 bool RelaxAll, bool NoExecStack) { 202 MipsTargetELFStreamer *S = new MipsTargetELFStreamer(); 203 return createELFStreamer(Context, S, MAB, OS, Emitter, RelaxAll, NoExecStack); 204} 205 206static MCStreamer * 207createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS, 208 bool isVerboseAsm, bool useLoc, bool useCFI, 209 bool useDwarfDirectory, MCInstPrinter *InstPrint, 210 MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) { 211 MipsTargetAsmStreamer *S = new MipsTargetAsmStreamer(OS); 212 213 return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI, 214 useDwarfDirectory, InstPrint, CE, TAB, 215 ShowInst); 216} 217 218extern "C" void LLVMInitializeMipsTargetMC() { 219 // Register the MC asm info. 220 RegisterMCAsmInfoFn X(TheMipsTarget, createMipsMCAsmInfo); 221 RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo); 222 RegisterMCAsmInfoFn A(TheMips64Target, createMipsMCAsmInfo); 223 RegisterMCAsmInfoFn B(TheMips64elTarget, createMipsMCAsmInfo); 224 225 // Register the MC codegen info. 226 TargetRegistry::RegisterMCCodeGenInfo(TheMipsTarget, 227 createMipsMCCodeGenInfo); 228 TargetRegistry::RegisterMCCodeGenInfo(TheMipselTarget, 229 createMipsMCCodeGenInfo); 230 TargetRegistry::RegisterMCCodeGenInfo(TheMips64Target, 231 createMipsMCCodeGenInfo); 232 TargetRegistry::RegisterMCCodeGenInfo(TheMips64elTarget, 233 createMipsMCCodeGenInfo); 234 235 // Register the MC instruction info. 236 TargetRegistry::RegisterMCInstrInfo(TheMipsTarget, createMipsMCInstrInfo); 237 TargetRegistry::RegisterMCInstrInfo(TheMipselTarget, createMipsMCInstrInfo); 238 TargetRegistry::RegisterMCInstrInfo(TheMips64Target, createMipsMCInstrInfo); 239 TargetRegistry::RegisterMCInstrInfo(TheMips64elTarget, 240 createMipsMCInstrInfo); 241 242 // Register the MC register info. 243 TargetRegistry::RegisterMCRegInfo(TheMipsTarget, createMipsMCRegisterInfo); 244 TargetRegistry::RegisterMCRegInfo(TheMipselTarget, createMipsMCRegisterInfo); 245 TargetRegistry::RegisterMCRegInfo(TheMips64Target, createMipsMCRegisterInfo); 246 TargetRegistry::RegisterMCRegInfo(TheMips64elTarget, 247 createMipsMCRegisterInfo); 248 249 // Register the MC Code Emitter 250 TargetRegistry::RegisterMCCodeEmitter(TheMipsTarget, 251 createMipsMCCodeEmitterEB); 252 TargetRegistry::RegisterMCCodeEmitter(TheMipselTarget, 253 createMipsMCCodeEmitterEL); 254 TargetRegistry::RegisterMCCodeEmitter(TheMips64Target, 255 createMipsMCCodeEmitterEB); 256 TargetRegistry::RegisterMCCodeEmitter(TheMips64elTarget, 257 createMipsMCCodeEmitterEL); 258 259 // Register the object streamer. 260 TargetRegistry::RegisterMCObjectStreamer(TheMipsTarget, createMCStreamer); 261 TargetRegistry::RegisterMCObjectStreamer(TheMipselTarget, createMCStreamer); 262 TargetRegistry::RegisterMCObjectStreamer(TheMips64Target, createMCStreamer); 263 TargetRegistry::RegisterMCObjectStreamer(TheMips64elTarget, 264 createMCStreamer); 265 266 // Register the asm streamer. 267 TargetRegistry::RegisterAsmStreamer(TheMipsTarget, createMCAsmStreamer); 268 TargetRegistry::RegisterAsmStreamer(TheMipselTarget, createMCAsmStreamer); 269 TargetRegistry::RegisterAsmStreamer(TheMips64Target, createMCAsmStreamer); 270 TargetRegistry::RegisterAsmStreamer(TheMips64elTarget, createMCAsmStreamer); 271 272 // Register the asm backend. 273 TargetRegistry::RegisterMCAsmBackend(TheMipsTarget, 274 createMipsAsmBackendEB32); 275 TargetRegistry::RegisterMCAsmBackend(TheMipselTarget, 276 createMipsAsmBackendEL32); 277 TargetRegistry::RegisterMCAsmBackend(TheMips64Target, 278 createMipsAsmBackendEB64); 279 TargetRegistry::RegisterMCAsmBackend(TheMips64elTarget, 280 createMipsAsmBackendEL64); 281 282 // Register the MC subtarget info. 283 TargetRegistry::RegisterMCSubtargetInfo(TheMipsTarget, 284 createMipsMCSubtargetInfo); 285 TargetRegistry::RegisterMCSubtargetInfo(TheMipselTarget, 286 createMipsMCSubtargetInfo); 287 TargetRegistry::RegisterMCSubtargetInfo(TheMips64Target, 288 createMipsMCSubtargetInfo); 289 TargetRegistry::RegisterMCSubtargetInfo(TheMips64elTarget, 290 createMipsMCSubtargetInfo); 291 292 // Register the MCInstPrinter. 293 TargetRegistry::RegisterMCInstPrinter(TheMipsTarget, 294 createMipsMCInstPrinter); 295 TargetRegistry::RegisterMCInstPrinter(TheMipselTarget, 296 createMipsMCInstPrinter); 297 TargetRegistry::RegisterMCInstPrinter(TheMips64Target, 298 createMipsMCInstPrinter); 299 TargetRegistry::RegisterMCInstPrinter(TheMips64elTarget, 300 createMipsMCInstPrinter); 301} 302